List of Articles Environmental Preservation Open Access Article Abstract Page Full-Text 1 - Investigation and determination of influential factors on small industries’ willingness to pay (WTP) in order to reduce the environmental pollutions (Case study: Sari County) Hamid Amirnejad Hamed Rafiee Open Access Article Abstract Page Full-Text 2 - The Investment Policy for the Sustainability of the Electricity Supply Chain: A Case in the Power Industry Mojgan Pouralizadeh